postの投稿画面で、写真とコメントを同時に投稿しようと試みたところ、
<%= image_tag @post.picture.url %>のところで、nil is not a valid asset source
が表示されてしまいました。
そこで、https://stackoverflow.com/questions/37530024/rails-5-nil-is-not-a-valid-asset-source-using-carrierwave
を参考に、unless post.picture.blank?
を加えても解決できませんでした。
ちなみに、picture_uploader.rb
はこちらです。
class PictureUploader < CarrierWave::Uploader::Base # Include RMagick or MiniMagick support: # include CarrierWave::RMagick # include CarrierWave::MiniMagick # Choose what kind of storage to use for this uploader: storage :file # storage :fog # Override the directory where uploaded files will be stored. # This is a sensible default for uploaders that are meant to be mounted: def store_dir "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}" end # Provide a default URL as a default if there hasn't been a file uploaded: # def default_url(*args) # # For Rails 3.1+ asset pipeline compatibility: # # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_')) # # "/images/fallback/" + [version_name, "default.png"].compact.join('_') # end # Process files as they are uploaded: # process scale: [200, 300] # # def scale(width, height) # # do something # end # Create different versions of your uploaded files: # version :thumb do # process resize_to_fit: [50, 50] # end # Add a white list of extensions which are allowed to be uploaded. # For images you might use something like this: # def extension_whitelist # %w(jpg jpeg gif png) # end # Override the filename of the uploaded files: # Avoid using model.id or version_name here, see uploader/store.rb for details. # def filename # "something.jpg" if original_filename # end end
もしかしたら、picture_uploader.rbの箇所で問題はありませんか?
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